BEGINNING THIS year, the World Migratory Bird Day will be celebrated globally twice, every second Saturday of May and October, in recognition of the different migration seasons. The United Nations Environment Programme/UN Convention on the Conservation of Migratory Species of Wild Animals (CMS), in a statement, said more than 300 events in more than 60 countries have been lined up, including bird festivals, education programs, bird watching trips, and a benefit concert to raise funds for international nature conservation. For more information, visit www.worldmigratorybirdday.org.